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Fresh 2026
Source leads
How to read and write leads and contacts to keep customer CRMs in sync using the Merge CRM API.
Your user authorizes your application to access their CRM (e.g. Salesforce, Hubspot) via an OAuth or similar authorization flow through Merge Link.
Utilize the GET /leads endpoint to fetch existing leads from your customer's CRM.
Utilize the GET /contacts endpoint to fetch existing contacts from your customer's CRM.
If there are any custom CRM fields that need to be pulled in, you can use Remote Fields.
As new contacts and leads get sourced, push them to your customers' CRMs using the POST /contacts and POST /leads endpoints.
Regularly call the GET /contacts and GET /leads endpoints using the modified_after query parameter to track updates to contacts and leads. Now your customers' contacts and leads in their CRM are always up-to-date!
Use webhooks for efficient and real-time syncs.
Integrate today or talk to our sales team to learn how Merge unlocks hundreds of integrations in days - not years.
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